extern int targetmin;
extern int targetmax;

extern int samplingmethod(struct tngraph*g, int iter, int k, int* min, int* max);
extern int medianvisitmethod(struct tngraph*g, int iter, int k, int* min, int* max);
extern int mediantreemethod(struct tngraph*g, int iter, int k, int* min, int* max);
extern int fringemethod(struct tngraph*g, int iterations, int k, int*min, int*max);
extern int exhaustivemethod(struct tngraph*g, int iterations, int k, int*min, int*max);
